# a, b = 0, 1
# while b < 10:
#     print(b, end=',')
#     a, b = b, a+b
"""
a = 0, b = 1 print b = 1
a = 1, b = 1   1
a = 1, b = 2  2
a = 2, b = 3   3
"""

# a = 2
# if a == 1:
#     print(1)
# elif a == 2:
#     print(2)
# else:
#     print(3)

# age = int(input('请输入狗狗的年龄：'))
# print("")
# if age <= 0:
#     print('你肯定是在逗我吧')
# elif age == 1:
#     print('14岁啦')
# elif age == 2:
#     print('22岁啦')
# elif age > 2:
#     human = 22 + (age - 2)*5
#     print(human, '岁啦')
# input('点击enter键退出')

# num = int(input('输入一个数字：'))
# if num % 2 == 0:
#     if num % 3 == 0:
#         print('你输入的数字可以整除 2 和 3')
#     else:
#         print('你输入的数字可以整除 2，但不能整除 3')
# else:
#     if num % 3 == 0:
#         print('你输入的数字不能整除 2，但能整除 3')
#     else:
#         print('你输入的数字不能整除 2 和 3')

